Datasheet HT45B3305H (Holtek) - 3

HT45B3305H HT45B3305H CAN Bus Controller CAN Bus Controller Features
• Operating Voltage: 3.0V~5.5V • Oscillator Type: High Speed External Crystal – HXT • Sleep Mode and Idle Mode • 32-byte Write Buffer with Data Check Unit for communicating with Host MCUs • Serial Communication Interfaces – I2C or SPI (up to 10MHz SPI data rate) • Clock Out pin with programmable prescaler • Interrupt output pins with selectable active level configuration • HT45B3305H CAN Core, contains the following features: ♦ Conforms to ISO11898-1, 2003 and CAN 2.0A/B ♦ 32 Message Objects ♦ Each Message Object has its own identifier mask ♦ Programmable FIFO mode – concatenation of Message Objects ♦ Maskable interrupt ♦ Programmable loop-back mode for self-test operation • Support the SOF (Start of Frame) signal output • 32×139-bit Message Memory • Package types: 16-pin NSOP/QFN
Applications
• Networked Automotive Products • Industrial Automation • Entertainment Products
General Description
A complete CAN Node requires a CAN controller, a CAN transceiver and a microcontroller. The device is developed as a stand-alone CAN (Controller Area Network) controller. For the connection to the physical layer additional transceiver hardware is required. Two pins of CANTX and CANRX interface to the CAN BUS Transceiver. The device includes a SPI and I2C interfaces to communicate with a microcontroller. The HT45B3305H CAN Module licensed from Bosch. The HT45B3305H CAN supports the CAN 2.0 Part A and B protocol specifications and compatible with the ISO11898-1 standards. This CAN Module abbreviated as C_CAN. It is capable of transmitting and receiving standard and extended messages. It also capable of both acceptance filtering and message handler and includes 32 Message Objects which can be concatenated to configurate FIFO buffer with different depth. The SPI interface with data rate of up 10MHz and I2C serial interface are provided for communication with a SPI or I2C based 8-bit MCU. Rev. 1.00 2 December 25, 2019 Rev. 1.00 3 December 25, 2019 Document Outline Features Applications General Description Block Diagram Pin Assignment Pin Description Absolute Maximum Ratings D.C. Characteristics A.C. Characteristics System Frequency Characteristics Timing Characteristics Operating Voltage Characteristics Operating Current Characteristics Standby Current Characteristics CAN Electrical Characteristics Power-on Reset Characteristics Power Control Function CLKOUT Pin IDLE Mode SLEEP Mode and Wake-up Functional Description Write Buffer and Data Check SPI and I2C Frame Fields SPI Serial Interface I2C Serial Interface HT45B3305H CAN Block Diagram Interrupt Output Pins Message RAM and FIFO Buffer Configuration HT45B3305H CAN Operating Modes CAN Application Register Description Register Map Register Reset Condition Register Description Application Circuits SPI Serial Interface I2C Serial Interface Package Information 16-pin NSOP (150mil) Outline Dimensions SAW Type 16-pin QFN (3mm×3mm for FP0.25mm) Outline Dimensions